2014中考英语介词和数词复习课件
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^Fz/>基数词•序数词基数词21-99的两位数,在十位数和个位数之间加连字符构成2) 325—three hundred and twenty-five 101-999的三位数由hundred加and再加两位数或末位数基数词hundred, thousand , million, billion表示确切数目时不能加s;但是:在表示不确切数目时,要用复数形式,如: hundreds of / thousands of students巧记基数词基数词不难记,找清规律很容易,十二以内词各异;十三数到十九数去, 后加・teen莫忘记。
二十三十至九十,整十之后有要说“几十几”,中间号别丢弃,hundred是“一百”,请你记住莫大意。
:、序数词2、序数词1)他跑步得了第一。
He was the first in the race.序数词一般由基数词后+ th构成,前面一般加定冠词the2)第二十the twent ^eth 以ty结尾的基数词构成序数词时,先把y改成i,再加班h3)第93 ninety-third第]49 one hundred and forty-nintli “二十”以上的多位数,T位数用序数词,其余仍用基数词。
4)不规则的序数词有以下几个’first, second, third,fifth, eighth, ninth, twelfth三、其他几种数词1 又2/31/2one andtwZhone (1)分数由基数词和序数词合成基数词/序数词1/3 a third2/3 two thirds分子大于1时,分母的序数词要用复数形式。
•小数•点读point;“零”读o或zero;小数点后的数字按个位基数词依次读出。
如:• 0.62・iero point six two3 •百分数•由percent表示:■ 29% —• 29 percent四.数词在句中的作用K主语豈Two of them are teachers.The third is green.2、定语二There are fifty students in our class.They live on the third floor3、宾语丄Give me two.Give me the second.4>表语二Pm eighteen now.You are the first to speak at the meeting.5>同位语豈You may leave it to us two.6、状语zThis room is one-sixth larger than that one.五、时刻表示法K钟点1)10: 20—Hen twenty / 8: 36—weight thirty-six正读法—按时间聂上的数字读;先读钟魚数,后读分钟数2)表示几点过几分在半小时以内(包括半小时),用介词past,时钟数在介词的后面,采用倒读法。